Submitted by Bryant Underwood of Fort Worth, TX 

My daughter uses an electric wheelchair and this year she went off to college.  Her mom and I were concerned that she may get her chair stuck or have some type of trouble and not be able to get to her cellphone.  So we use a BS2 to control a GSM phone to be a 'telematics' system for her wheelchair.  What you see below is the main board as I was finishing the final testing and the device as mounted on her chair.  

I took a standard GSM phone, (the Cellphone used was a SonyEricsson T226, although just about any phone could be used and would respond to the AT Command Set) got a pre-paid SIM and connected it to the BS2 and two wireless remotes.  One on her chair and one she keeps in her purse.  If there is a problem she can push the buttons on the remotes and the device will call a local health care provider, then my mobile and then our home, or with another sequence of button presses it will call campus police.  When anyone is reached, the unit acts like a standard speakerphone. The joy for me is that it's always on and I never have to worry.  Plus at boot up the BS2 sends command to the phone to place it in auto answer mode.  If we are ever concerned as a last resort, we can call the phone and it will pickup in speakerphone mode.  Since her chair is always with her we can know she is safe.  The alternatives, even pay services were little more than remote enabled speakerphones with a required wired connection. 

With the ease of the BS2 the whole project was assembled over a weekend including the time for coding and de-bugging.  So in a very short time, at home I was able to develop and deploy a one of a kind wireless product that exactly fit my needs-Thanks Parallax! 

For additional info:  bryantunderwood@gmail.com

Resource Info:
Phone data .(pdf)
Main board .(ppt)
ERC Phone Control SourceCode: